Memory-Assisted Nonlocal Interferometer toward Long-Baseline Telescopes

Physical Review Letters 2026

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Authors: Bin Wang, Xi-Yu Luo, Boyang Gao, Jian-Long Liu, C Wang, Zi Yan, Qiao-Mu Ke, Da Teng, Ming-Yang Zheng, Yuan Cao, Jun Li, Cheng-Zhi Peng
+3 more Qiang Zhang, Xiao‐Hui Bao, Jian-Wei Pan
DOI: 10.1103/qpzn-h7p9
Cited by: 1
References: 47

Abstract

Quantum networks and remote quantum entanglement serve as vital future quantum communication resources with broad applicability. A key direction lies in extending the baseline of optical interferometers to enhance angular resolution in interferometric imaging. Here, by measuring a simulated thermal light field, we report the demonstration of a memory-assisted nonlocal interferometer achieving a fiber-link baseline up to 20 km while simultaneously showing its capability to compensate for a geometric delay equivalent to 1.5 km. This result demonstrates potential for enhancing the angular resolution of interferometric imaging in the optical band with delocalized single-photon entanglement, and paves the way for future application of quantum memories in astronomical observation.

Fields of Study & Subjects

Neural Networks and Reservoir Computing Pulsars and Gravitational Waves Research Adaptive optics and wavefront sensing

Publication details

Journal / source
Physical Review Letters
Publisher
American Physical Society (APS)
Volume
136
Issue
24
Pages
240801–240801
Publication date
30 April 2026
Language
EN